Radioiodine fallout over the Midwest in May.
High concentrations of radioiodine in milk, found preferentially over the midwestern United States after atmospheric nuclear tests in May 1962, 1965, and 1966, can best be explained by high-reaching intense thunderstorms that scavenge passing radioactivity from the upper troposphere and lower stratosphere.
D000398:Air Pollution, Radioactive; D000818:Animals; D005507:Food Contamination, Radioactive; D007456:Iodine Isotopes; D008892:Milk; D014481:United States
D007456:Iodine Isotopes